Vaisala GMR20 User Manual

GMR20 relay output module U305en-1.1

MOUNTING

The GMR20 is an optional relay output module to be used with the GM20 series
transmitters.

1. Open the transmitter cover.

2. Pull the two output wires through the hole at the bottom of the housing.
When connecting them to the screw terminal of the GMR20, hold the
module in one hand and make connections with the other (see Figure 1).
Check that the nominal 24 V supply is connected between terminals +
and - of the transmitter's mother board.

Figure 1 Connecting the wires to the GMR20 module

3. Install the module on the two 5-pin connectors as indicated in Figure 2.

Figure 2 Installing the GMR20 module

4. Close the transmitter cover.

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GMR20 relay output for GM20 series

TECHNICAL DATA

contact ratings max. 50V 0.5 A
default relay setpoints:

range relay on relay off
2000 ppm (standard) 1000 ppm 950 ppm

other measurement ranges:
range relay on relay off

0...5000 ppm 2500 ppm 2375 ppm

0...10 000 ppm 5000 ppm 4750 ppm

0...20 000 ppm 10 000 ppm 9500 ppm

(setpoints can be changed with the 19222GM Calibration Software Kit)

GUARANTEE

Vaisala issues a guarantee for the material and workmanship of this product
under normal operating conditions for one (1) year from the date of delivery.
Exceptional operating conditions, damage due to careless handling and
misapplication will void the guarantee.

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